Refrigerating apparatus



Dec. 22,1925- 1,566,919

' H. A. PARKYN HEFRIGERATING APPARATUS Filed July 1918 2 Sheets-Sheet 1Dec. 22 1925. 1,566,919

H- A. PARKYN REFRIGERATING APPARATUS Filed y 1918 2 Sheets-Sheet 2Patented Dec. 22, 1925.

UNITED STATES 1,566,919 PATENT OFFICE.

HERBERT A. PARKYN, OF CHICAGO, ILLINOIS, ASSIGNOR T0 LEoNAnn run? a"MOTOR COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF MAINE.

REFRIGERATING APPARATUS.

Application filed July 16, 1918. Serial No. 245,196.

To all whom it may concern:

Be it known that I, HERBERT A. PARKYN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvementin Refrigerating Apparatus,

of which the following is a specification.

My invention relates more particularly to improvements in refrigeratingapparatus of the type employing a compressor for compressing thegasified refrigerant, such as ethyl chloride, or sulphur dioxide, afterleaving the refrigerating, or expansion, coil; and condensing means incommunication with the compressor for reducing the com- -pressedrefrigerant to liquefied condition.

My primary object, is to provide by a novel, simple and economicalarrangement, for the cooling of the compressed refrigerant, by the useof air alone, to place it in the desired condition for introduction intothe refrigerating coil, and other objects as will be manifest from thefollowing description.

Referring to the accompanying drawings,.

Figure 1 is a view in elevation, partly sectional, and in part in thenature of a diagram, of a refrigerating system constructed in accordancewith my invention; Figure 2 is a plan sectional view of the constructionshown in Figure 1 taken at the line 22 on Fig. 1 and viewed in thedirection of the arrows; and Figure 3, an enlarged view in sectionalelevation, taken at'the line 3-3, on Figure 2, and viewed in thedirection of the arrows.

The compressory or pump, of the particular apparatus illustrated, isrepresented at 4, this being of the so-called intermeshingl gears at theopposite side of the centers of the shafts 7 and 8, the outlet 11communicating with a pipe 12 extending upwardly from one end of thecasing 9. The compressor 4 is located within a compressor chamber 13into which the gas compressed by the compressor 4 is discharged throughthe pipe 12, the chamber 13, in the case of the particular constructionillustrated, containing a bath.

which extends outwardly from the casing 13 and is formed intermediateits ends into a coil 18, the opposite end of this pipe opening into thecasing 13 below the level of the lubricating oil therein. The outlet ofthe compressor chamber 13 is represented at 19 and is provided with ascreen-device 20 to aid in the' separation of the compressed refrigerantin gasified condition, from particles of lubricant which maybedischarged through the pipe 12. The outlet 19 connects with thecondenser-structure, Which by preference is an open-work structure andmore preferably is a coil represented at 21, this coil being'preferablyof general rectangular-form as shown in Fig. 2 for housing therein theparts hereinafter described and preferably the coil 18. It is preferredthat, instead of providing a single course from the outlet 19 to the endof the condenser, a multiple course be provided, such a course'beingshown in the drawings wherein the outlet 19 is provided withvaheader 22 from which the two pipes 23 and 2A lead, these pipes being sodisposed relative to each other and so bent as to provide preferably thesingle coil structure shown, with their discharge ends 25 and 26connected by a header 27, with a pipe 28 which connects with therefrigerator coil 29, the pipe 28, containing therein an expansion valve30 of any desirable construction and the end of the coil 29 oppositethat connected with the pipe 28 being connected with a pipe 31 whichextends upwardly and communicates with the intake 10 of the compressor4.

The pump shown is of the so-called directdrive type, the same beingdriven by the direct connection between a shaft 32 of an electric motorrepresented at- 33, and the shaft 7 the shaft 32 extending through oneof the spaces between the turns of the coil 21 and through the center ofthe coil 18. In accordance with the preferred embodiment of myinvention, the compressor chamber 13 @and coil 18 are located Within theconfines of the coil 21 and the shaft 32 is provided with a fan 34, thisfan being also located within the confines of the coil 21 and sodisposed that, when driven, it will cause air to circulate through thespaces between the turns of the coil 21 and against the compres- 4 sorchamber 13 and coil 18, for producing the desired cooling of thecondenser coil, the

.. compressor chamber and the lubricating ,greatest efliciency from thefan. structure is represented in the drawings'at bath, without renderingnecessary the use of any other cooling medium, such as water.

It is preferred that there be associated with the parts just described astructure which will operate to confine the air currents'created by thefan 34 for obtaining the Such a 35 and comprises the side-members 36 andtop 37 forming an open-ended housing in which the coil 21, with theparts surrounded thereby, are housed, it being desirable that the sidesof this housing contain openings 38 at intervals, especially when thesesides extend close to the coil.

The parts of the apparatus just described may belocated at any desirableplace, as,

. form as, for example, by providing the open-- for example, on the topof the refrigerator-.

chest where the apparatus is used in this connection.

If desired, the bottom 39 of the compressor-chamber 13 may be upwardlyoffset relative to the base portion 40 thereof as shown, to permit theportion 40 to be of open-work ings 41 therein which permits of thecirculation of the air under the action of the fan 34, against thebottom 39 of the compressor-chamber and thus augments the coolingeffect.

The use of a fan on the shaft 32 is particularly advantageous asthe-arrangement is very simple and by reason of the direct- 1 drive ofthe rotary compressor, from the motor 33, the fan 34 is driven at suchspeed i that the desired cooling effect, to cause the apparatus tocontinuously operate under widely varying temperature conditions, may beproduced, the fan in this particular arrangement illustrated, and whichpreferably is rotated in a'direction to cause the air to travel throughthe housing from its right hand end through its left hand end in Fig. l,and thence against the motor 33, not only serving to effect the coolingof the condenser, compressor, compressor-chamber and coil18, but alsothe motor 33, which is desirable as will be understood by those skilledin the art. I r

While I have illustrated and described a particular construction inwhich my invention is embodied, I do not wish to be understood asintendingto limit it thereto, as the same may be variously modified andaltered without departing from the spirit of my invention, it being myintention to claim my invention as fully and completcly as the priorstate of the art will permit.

What I claim as new and desire to secure by Letters Patent is- 1.- Inarefrigerating apparatus, the comthe comwhich the refrigerant compressedby the pump passes, a condenser for the compressed gas, a housingcontammg an inletand an outlet for air and 1n which said condenser andmember are located, and a fan on said shaft for causing air to passthrough said housing.

3. In a refrigerating apparatus, the combination ofra rotary pump forcompressing therewith, a motor directly connected with said shaft fordriving it, a member into which the refrigerant compressed by the pumppasses, a condenser for thecomthe gasified refrigerant, a shaftconnected pressed gas, a housing containing an inlet and an outlet inits opposite ends and in which housing said condenser and member arelocated, and a fan on said shaft for causing air to pass through saidhousing, said containin openings in its sides.

4:. a refrigerating apparatus, the combination of a rotary pump forcompressing the gasified refrigerant, a receptacle for oil,

ing it, a condenser for the gas compressed by said pump, a conduitopening into said receptacle and into the interior of said, pump forleading oil into the pump, and a fan on said shaft for causing air tociraulate against said condenser and said conuit. 5. In "a refrigeratingsystem, the com bination of a rotary pump for compressing a shaftconnected with said pump, a motor directly connected with said shaft fordrivthe gasified refrigerant, a body of oil, means above said body ofoil for receiving the re frigerant compressed by the pump, means forconveying compressed refrigerant from the pump to said refrigerantreceiving means, a shaft connected wlth said pump a motor directlyconnected with said shaft for drivin presse it, a condenser for the gasc0mby said pump, a conduit opening into said body of oil and into theinterior of said pump for leading oil into the pump, and a fan on saidshaft for causing air to circulate against said condenser, refrigerantreceiving means and conduit.

6. In a refrigerating apparatus, the combination of a compressor forcompressing the gasified refrigerant, a receptacle for oil, means foroperating said compressor, a condenser for said compressor, a conduitopening into said receptacle and into the in terior of said compressorfor leading oil into said compressor, and means for circulating coolingcurrents of air against said condenser and conduit.

7. In a refrigerating apparatus, the conr hination of a compressor forcompressing the gasified refrigerant, a receptacle for oil, means foroperating said compressor, a condenser for said compressor, a conduitopening into said receptacle and into the interior of said compressorfor leading oil into said A compressor, and means for circulating cool-vbination of a compressor for compressing.

ing currents of air against said condenser, receptacle and conduit.

8. In a refrigerating apparatus, the comterior of said compressor forleading oil into said compressor, and means for circulating coolingcurrents of air against said condenser and conduit.

9. In a refrigerating apparatus, the combination of a compressor forcompressing the gasilied refrigerant, a receptacle for oil and in whichreceptacle said compressor is located and into which said compressordischarges, means for operating said compressor, a condenser for saidcompressor, a conduit opening into said receptacle and into the interiorof said compressor for leading oil into said compressor, and means forcirculating cooling currents of air against said condenser, receptacleand conduit.

10. A refrigerating apparatus including a pump for the refrigerant, anair cooling conduit comnmnicatng with the pump discharge, an oil coolingconduit communicating with the pump, and a fan for circulatingair'aliout said conduits.

11. A refrigerating apparatus including a pump for the refrigerant, acasing enclosing such pump and forming therewith a space adapted tocontain oil and communicating with the pump interior, and an oil coolingconduit communicating with ,the said space in the casing and means fordirecting a cooling fluid about said conduit.

HERBERT A. PARKYN.

